Her article in thepeerage is here. Not to be confused with her daughter Jane Digby.
From www.shakespeares-sonnets.com.
Lady Jane exudes casual elegance in this portrait wearing a chemise and a minimal dress above it.
Keywords: 1797 Wilkin, Hoppner, Jane Coke, Jane Howard, Viscountess Andover, Jane Digby (- 1863), Viscountess, British, curly coiffure, trapezoidal neckline, chemise, modesty piece, criss-cross bodice, vee décolletage, elbow length tight sleeves, Empire waistline, waist band, bows, close skirt